Hello , i am a new beginnger, i use the command.sh,listed below:

export MANIFEST_BRANCH=linaro_android_4.4.2
export MANIFEST_FILENAME=arndale-octa.xml
repo init -u ${MANIFEST_REPO} -b ${MANIFEST_BRANCH} -m ${MANIFEST_FILENAME} --repo-url=git://android.git.linaro.org/tools/repo -g common,arndale-octa

and now it looks like download all the source except u-boot and kernel source, meanwhile I don't know how to build source, offical website says it provides user a shell file "linaro_android_build_cmds.sh" ,but i can't find it,I need some help for how to start this.
Thanks very much !!

jefby